4002 - Attachment II - Foundation Anchor Verification and Modified Extended Creep Test Steps.pdf
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- Attached to
- Garrison Dam Spillway Modification Project - Phase 2 Anchor Testing Federal contract opportunity
- Solicitation number
- W9128F25QA010
About this file
This document is a technical specification for foundation anchor verification and modified extended creep testing procedures for the Garrison Dam Spillway Modification Project (Phase 2). The document contains two detailed testing schedules: Table 1 (Verification Test Schedule) following FHWA NHI 05-039 and Table 2 (Modified Extended Creep Test Schedule) following PTI DC 35.1-14. Both tables outline precise loading and hold time steps for testing foundation anchors, with specific instructions for applying varying load levels (designated as AL and DL), recording total movement, residual movement, and calculating elastic movement. The testing process involves multiple loading cycles with incrementally increasing load percentages and specific hold times, designed to assess the anchor's performance and stability under different load conditions.
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Text version
GDSM ANCHOR INVESTIGATION PHASE 2
FOUNDATION ANCHOR VERIFICATION AND MODIFIED EXTENDED CREEP TEST STEPS
FEB 2025
Table 1 Verification Test Schedule
Pe r F
H W
A N
H I 0
5-
Step Loading Applied Load Hold Time (min) 1 Apply AL AL 2.5
2 Cycle 1
0.15 DL 2.5
0.30 DL 2.5
0.45 DL 2.5
AL 1
3 Cycle 2
0.15 DL 1
0.45 DL 1
0.60 DL 2.5
0.75 DL 2.5
0.90 DL 2.5
1.00 DL 2.5
AL 1
4 Cycle 3
0.15 DL 1
1.00 DL 1
1.15 DL 2.5
1.30 DL --
Hold load for 10 min. If total movement is greater than 0.040" for 1-10 minutes, extend to 60 minutes hold.
Cycle 3 (cont.)
1.45 DL 2.5
AL 1
7 Cycle 4
0.15 DL 1
1.45 DL 1
1.60 DL 1
1.75 DL 2.5
1.90 DL 2.5
2.00 DL 10
1.50 DL 5
1.00 DL 5
0.50 DL 5
AL 5
8 Remove load and process results.
Note: Record and plot Total Movement (ti), Residual Movement (ri), and calculate Elastic Movement (ei) in accordance with FHWA NHI 05-039.
GDSM ANCHOR INVESTIGATION PHASE 2
FOUNDATION ANCHOR VERIFICATION AND MODIFIED EXTENDED CREEP TEST STEPS
FEB 2025
Table 2. Modified Extended Creep Test Schedule
Pe r P
TI
D
C
5.
1-
Step Applied Load Hold Time (min)
AL 10
0.25DL 10
AL Until Stable
0.25 DL Until Stable
0.50 DL 30
AL Until Stable
0.25 DL Until Stable
0.50 DL Until Stable
0.75 DL 30
AL Until Stable
0.25 DL Until Stable
0.50 DL Until Stable
0.75 DL Until Stable
1.00 DL 45
AL Until Stable
0.25 DL Until Stable
0.50 DL Until Stable
0.75 DL Until Stable
1.00 DL Until Stable
1.20 DL 60
AL Until Stable
0.25 DL Until Stable
0.50 DL Until Stable
0.75 DL Until Stable
1.00 DL Until Stable
1.20 DL Until Stable
1.33 DL 300
Ad di tio n
Pe r F
H W
A N
H I 0
5-
(p ar tia l t es t s ch ed ul e)
AL Until Stable
1.45 DL 1
1.60 DL 1
1.75 DL 2.5
1.90 DL 2.5
2.00 DL 10
1.50 DL 5
1.00 DL 5
AL 5
8 Remove load and process results.
Note: Record and plot Total Movement (ti), Residual Movement (ri), and calculate Elastic Movement (ei) in accordance with PTI DC35.1-14 incorporating additional steps shown.
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